Fire-extinguisher.



G. M. JAGOBSEN.

FIRE EXTINGUISHBR.

APPLICATION FILED PEB.1I, 1913.

1,1 12,537. Patented 0ct.6,1914.

WIINESSES: INVE/VTUR um \3 w 94M I I Rx as \By- Mo SQ, ZJTTORIVEY THE NORRIS PETERS CO.. PHOTO4LITHOU WASHINGTON D. Cv

@FFTC CHARLES M. JACOBSEN, OF DETROIT, MICHIGAN.

FIRE-EXTINGUISHER.

To all whom it may concern Be it known that 1. CHARLES M. Jasonsnx, a citizen of the United States, and a resident of Detroit, in the county of Wayne and State of Michigan, have invented a new and Improved Fire-Extinguisher, of which the following is a specification.

This invention relates to means adapted for storing liquids, such as fire-extinguishing chemicals, and for discharging such contents when desired, and its object is to provide a device which can be easily filled and discharged, which will occupy minimum space, and which can be cheaply constructed.

This invention consists in the details of construction set forth in the following specification and particularly pointed out in the claims.

In the accompanying drawing, Figure 1 is an elevation of the improved fire extinguisher. Fig. 2 is a section on a larger scale of the left end of the same on the line 22 of Fig. 1. Fig. 3 is an elevation of the piston from the right in Fig. 1. Fig. 4 is an elevation of the end of the piston rod. Fig. 5 is a central section of a modified form of piston. Fig. 6 is an elevation of the same.

Similar reference characters refer to like parts throughout the several views.

The present construction is merely a large syringe provided with a valve to close the discharge nozzle and constructed so that the piston can be disconnected from the piston rod at will, so that the piston rod can be pressed into the body of the implement out of the way without discharging the contents.

The body or container portion of this present device is preferably a cylinder 1 of thin metal having a rear head 2 provided with av stufiing box 3 in which the piston rod 4: is slidable. A handle 5 at one end of the rod enables the operator to slide the piston rod in and out, while a small cross-bar or protuberance 6 at the opposite end is adapted to connect to the piston. The head 2 has a recess 8, preferably hexagonal, to receive an angular boss 9 on the plate 10 of the piston. See dotted lines in Fig. 3. A. second plate 12 connects to the first, preferably by rivets 18, and between the two plates is held the inturned portion 14 of the washer of leather or similar material whose downturned flange 15 fits the bore of the body 1. The plate 12 has an opening 16 through which the cross-bar 6 on the piston may Specification of Letters Patent.

Application filed February 17, 1913.

Patented Oct. 6, 1914;.

Serial No. 748,778.

pass. The forward end of the body is closed by a head 17 into which a valve, preferably a cock 18, is fitted.

It will be noticed that normally the piston is at the rear or left end of the filled body Fig. 1) and the piston rod is disconnected therefrom and extends into the body as there shown with its cross-bar 6 at the forward end. To discharge the contents, the piston rod is drawn backward until the cross-bar 6 engages the plate 12, when the piston is turned until the bar 6 registers with the aperture 16, whereupon the piston is pulled back still farther to carry this cross-bar into such opening. The piston is then turned so that this cross-bar will be across the opening and between the plates 10 and 12 as shown in dotted lines in Fig. 3. The cook 18 is then opened and the piston rod and piston forced toward it, forcing the contents out of the container.

Many other practical devices for connecting the piston to its rod may be employed. A very simple construction is shown in Figs. 5 and 6, wherein the plates 10 and 12, leather ring 14 15 and rivets 13 are the same as before described. Secured to the plate 12 are two cleats 18 having jaws 19 under which the cross-bar 61nay be held when pulled up against the plate 12 and then turned to the left (Fig. 6). When the cross bar 6 has reached this position, the piston rod may be pushed forward to carry with it the piston to force out the contents of the cylinder 1.

The angular boss 9 and its socket 8 are of value as they prevent the piston from turning when it is desired to cause the bar 6 to pass through the openin 16 or to engage under the jaws 19. While it is desir able that the leather shall fit the cylinder, this fit may be somewhat loose without destroying the efficacy of this extinguisher. It will be understood that its use is not limited to any particular chemical, any free flowing liquid being adapted for use with this instrument. The container may be filled by opening the valve and inserting it in a vessel of the liquid and then drawing back the piston to suck the liquid up into the container; or if the piston is too loose in the container to produce a vacuum the piston may be moved to the rear end of the container, the valve removed, and the container filled by means of a funnel, after which the valve will be replaced.

EDWARD H.

- .hUso VI.

5 each, 'by addressin c11 1, I]. a v

:7. pist 'Wash Z6 7r S11E15 mlm at the other end J. I: r I A I "1 J 1n. mid conmlner and ol'nvl'i i p 5 M 11115 patent may be obtained 1" five 

